#!/bin/sh -e

# Use the Python executable provided from the `-p` option, or a default.
[[ $1 = "-p" ]] && PYTHON=$2 || PYTHON="python3"

MIN_VERSION="(3, 6)"
VERSION_OK=`"$PYTHON" -c "import sys; print(sys.version_info[0:2] >= $MIN_VERSION and '1' or '');"`

if [[ -z "$VERSION_OK" ]] ; then
    PYTHON_VERSION=`"$PYTHON" -c "import sys; print('%s.%s' % sys.version_info[0:2]);"`
    DISP_MIN_VERSION=`"$PYTHON" -c "print('%s.%s' % $MIN_VERSION)"`
    echo "ERROR: Python $PYTHON_VERSION detected, but $DISP_MIN_VERSION+ is required."
    echo "Please upgrade your Python distribution to install Starlette."
    exit 1
fi

REQUIREMENTS="requirements.txt"
VENV="venv"
PIP="$VENV/bin/pip"

set -x
"$PYTHON" -m venv "$VENV"
"$PIP" install -r "$REQUIREMENTS"
"$PIP" install -e .